Translation of unswerving in Spanish:

adjective

So from this day forward, in accordance with his thesis, the human race will be unswerving in its dedication to fulfilling this end; all human efforts will henceforth be directed towards blowing up the sun.

But the reserve's defenders were unswerving in their commitment to a greater cause: conserving the region's biodiversity for the benefit of mankind.

The Green Party has demonstrated absolute support and has been unswerving in its commitment.